Different places calculate WAR differently, it probably just depends on which site you're looking at, but yeah, according to www.baseball-reference.com, in 2012 Dayan had a 0.8 oWAR, -0.5 dWAR, and a total WAR of 0.9.

__________________"I have the ultimate respect for White Sox fans. They were as miserable as the Cubs and Red Sox fans ever were but always had the good decency to keep it to themselves. And when they finally won the World Series, they celebrated without annoying every other fan in the country." Jim Caple, ESPN (January 12, 2011)

"We have now sunk to a depth at which the restatement of the (bleeding) obvious is the first duty of intelligent men." — George Orwell

I think it reiterates the point that WAR is a nice, easy to guage stat to get a kind of snapshot of what each player's worth is, but it's far from a complete picture. The biggest problem will probably always be settling on a definition of what defines a "replacement level" player for each position.

As long as you're taking your stats from a consistent source, though, you shouldn't have too much trouble.